import Vue from 'vue'
import VueRouter from 'vue-router'
// 导入子组件
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import Goods from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import OrderList from '../components/order/List.vue'
import Report from '../components/report/Report.vue'


Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    // 注册登陆子组件路由规则
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,redirect: '/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params },
        { path: '/goods', component: Goods },
        { path: '/goods/Add', component: Add },
        { path: '/orders', component: OrderList },
        { path: '/reports', component: Report },
      ]
    },
  ]
})
// 挂在路由导航守卫,   路由管理守卫   在路由管理器根据url找子组件之前运行
// to.path 拿到的值    就是#后面的/home
router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // form 代表从哪个路径跳转而来
  // next 是一个函数,表示放行
  // next() 放行  next('/login') 强制跳转
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login') //修改了url地址,变成了/login
  next()
})


export default router
